“The fully‐grown Death Cap mushroom cap is silky smooth, and its colour varies from white to greenish‐brown. The gills are white – unlike the pink or brown gills of the common field mushroom. The stem is white to pale yellow-green.

“People should not eat any mushroom picked in the wild unless they are experienced and can be absolutely certain that it is not poisonous,” Dr Kelly said.

”Anyone who suspects that they might have eaten Death Cap mushrooms should seek urgent medical help at a hospital emergency department.’’

Two people died after eating the mushrooms in Canberra last year. Chef Liu Jun, 38, and kitchenhand Tsou Hsiang, 52, died from liver failure after eating the death cap mushrooms in a stir-fry Mr Liu prepared after work at the Harmonie German Club in Narrabundah on New Year's Eve.